<!doctype html>
<title>WebSockets: send() with unpaired surrogate when readyState is OPEN</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=../../../constants.sub.js></script>
<meta name="variant" content="?default">
<meta name="variant" content="?wss">
<meta name="variant" content="?wpt_flags=h2">
<div id="log"></div>
<script>
async_test(function(t) {
  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/echo');
  ws.onopen = t.step_func(function(e) {
    // lone low surrogate, lone high surrogate + surrogates in wrong order.
    ws.send('a\uDC00xb\uD800xc\uDC00\uD800x');
  })
  ws.onmessage = t.step_func(function(e) {
    assert_equals(e.data, 'a\uFFFDxb\uFFFDxc\uFFFD\uFFFDx');
    ws.onclose = t.step_func(function(e) {
      ws.onclose = t.unreached_func();
      t.step_timeout(() => t.done(), 50);
    });
    ws.close();
  })
  // This will be overridden if the message event fires.
  ws.onclose = t.unreached_func('close event should not fire before message event');
 });
</script>
